A two-dimensional coordination polymer containing a two-dimensional zinc–carboxyl­ate layer constructed from helical chains: poly[(μ₄-benzene-1,2-dicarboxyl­ato)zinc(II)]

The title compound, [Zn(C₈H₄O₄)]_n, consists of one Zn^II cation and one benzene-1,2-dicarboxyl­ate dianion (BDC²⁻) as the building unit. The Zn^II cation is four-coordinated by four carboxyl­ate O atoms from four dianionic BDC²⁻ ligands in a distorted tetra­hedral geometry. The Zn^II cations are linked by the BDC²⁻ ligands to generate a structure featuring two-dimensional zinc–carboxyl­ate layers containing left- and right-handed helical chains. The two-dimensional layers are stacked along the a direction. The thermal stability of the title com­pound has been studied.